Vacuum cleaner



Patented Nov. 8, 1938 UNITED STATES PATENT OFFICE VACUUM CLEANERApplication October 18, 1933, Serial No. 694,076

10 Claims.

The present invention relates to electric motor driven vacuum cleanersof the portable household ype.

The object of the invention is to provide an improved construction andarrangement of vacuum cleaner wherein the motor can be assembled orinserted in the cleaner casing from below, and for a consideration ofwhat I believe to be novel and my invention, attention is directed tothe accompanying description and the claims appended thereto.

In the drawing, Fig. l is a longitudinal sectional view of a vacuumcleaner structure embodying the invention, and Fig. 2 is a side view'thereof.

Referring to the drawing, the vacuum cleaner casing comprises a dome iand a suction nozzle 2 formed integral with each other. Also, formedintegral with the dome is a depending circular v wall 3 which definesthe surrounding wall of the fan chamber, a wall 4 which defines thedischarge conduit from the fan chamber, and two spaced walls 5 to whichthe cleaner handle (not shown) is pivotally connected.

Mounted in dome i is an electric motor 6 on the shaft of which ismounted a fan 7 located in the fan chamber. The motor is supported by ametal ring 8 which surrounds the motor casing and is fixed against adownwardly facing ledge 9 by means of screws in. Motor 6 is attached toring 8 through the intermediary of a plurality of circumferentiallyspaced rubber cushions Ii. Rubber cushions ii are attached to ring 8 attheir central portions and at their lower ends rest on a flange 12formed integral with the motor casing. They are held against the flangeby studs l3 which extend through openings in the cushions Ii and attheir upper ends receive nuts ll. On the top of each cushion is aspacing washer i5 and clamped between shoulders on the spacing washersand the nuts is a rubber ring it held between two metal rings IT. Therubber ring it at its inner edge engages the casing of motor 6 and atits outer edge rests against the inner surface of dome i. The cushionsii and ring i6 serve to yieldably mount the motor in position in thedome. For sealing the space between the motor flange i2 and the adjacentwall of the dome, there is provided a rubber ring i8 having an outturnedupper edge which is held by the screws Ill. This motor mountingarrangement is not claimed herein as it forms the sub- Ject matter of myapplication Serial No. 675,888 flied June 15, 1933, now Patent No.1,978,158. It

is shown in the present instance by way of example and as representingone arrangement which may be used for mounting the motor in the dome.

Dome I and surrounding fan casing wall 3 open downwardly and are closedby a bottom plate I! I provided with a central opening 20 which com- 5municates with the suction nozzle and conveys air from the suctionnozzle to the inlet of the fan.

- In the present instance wall 3 is shown as an integral part of thedome. However, it may be formed wholly or partly integral with bottom 10plate i9. Bottom plate I9 is fastened to the lower edge of wall 3 bymeans of screws 2i. It forms the lower wall of the fan chamber. Formedintegral with bottom plate I9 is a depending wall 22 which defines withbottom plate IS a passage 5 23 leading from inlet opening 20 to thesuction nozzle. The lower side of passage 23 is closed by a cover 24held in position in any suitable manner (not shown) so that it can bereadily detached. In the present instance, the vacuum 0 cleaner is shownas being provided with a brush 25 in its suction nozzle driven by a belt26 from a pulley extension 21 on the motor shaft, and cover 24 givesaccess to this belt. Also', formed integral with cover plate i9 and wall22 is a rear 25 extension 28 having a transverse opening 29 in which isjournaled a shaft for the rear wheels (not shown) of the vacuum cleaner.The front wheels of the vacuum cleaner are indicated at 30.

The opening over which bottom plate I 9 fits is 30 larger in diameterthan the motor casing and the fan so that the motor may be inserted intothe dome from beneath and fixed in position by means of the motormounting arrangement without disassembling the outer casing of thecleaner.

In assembling the construction, the motor is first mounted in the dome,after which the cover plate I9 is fastened in position. This makes asimple assembling arrangement and one wherein 40 the screws M arebeneath the cleaner so that they are out of sight. As a result, thedome, suction nozzle, the walls forming the discharge conduit, and thewalls between which the handle is pivoted may be constructed with asmooth, even outside 45 contour, the walls blending into each other sothatthe cleaner presents an unbroken appearance from the outside. Thisenables the cleaner casing to be given a pleasing appearance and it maybe shaped also to give a stream line appearance. 50

It will be seen that the cleaner casing comprises essentially only twoparts, the dome with the parts formed integral therewith and the bottomcover plate with the parts formed integral with it. There is thusprovided in substance a u Nov. 8,1938. w. J. MCLACHLAN 2,136,248

ELECTRICAL REGULATION Filed Jan. 30, 1957 Fig. I. VOUA GE I'FfG'ULA 70R7 4 sou/ms Iz To lhventor:

Willard J. No Lachlan, by y H is Attorney.

